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1
Hossaina, Foysal, Tatia Biswasb, M. Ashraful Islama, Nusrat Jahana, and Md Mokter Hossaina. "EFFECT OF AGE OF SUCKERS AND BUNCH COVERING ON YIELD AND QUALITY ATTRIBUTES OF BANANA CV. AMRITSAGAR." Agriculture Extension in Developing Countries 02, no. 02 (2024): 92–99. https://doi.org/10.26480/aedc.02.2024.92.99.
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The investigation was carried out at the Horticulture farm of Bangladesh Agricultural University, Mymensingh during the period from April to October, 2019. The experiment was conducted in Randomized Complete Block Design (RCBD) with two factors and five replications. Factor A was different aged suckers namely A1= 1st year sucker, A2= 2nd year sucker and A3= 3rd year sucker. Factor B was different types of bagging like B1= Black, B2= White, B3= Blue and B4= Control. Five fingers were randomly selected from each hand and were analyzed for different parameters. The result of the experiment showed that all the parameters were studied found significantly different among the treatments. Among the effect of sucker age, the highest plant height (301cm), plant diameter (74.4 cm), number of fingers per bunch (55.1), bunch weight per plant (13.15 kg), weight all hands per bunch (11.79 kg), weight of single finger at ripening time (145.4 g) were found from A3 (3rd year sucker ). Also, the highest weight of single pulp at ripening time (107.3 g), weight of single peel at ripening time (38.0 g), TSS (20.05 %), moisture content of pulp (78.4 %), dry weight of peel (5.36 g) and moisture content of peel (85.76%) was found from A3 (3rd year sucker). On the other hand, among the effect of bagging, the highest growth and yield like fingers per bunch (57.47), bunch weight per plant (12.83 kg), weight all hands per bunch (11.42 kg) were found in B2 (white polythene). Also, the highest weight of single finger at harvesting time (157 g), weight of single finger at ripening time (137.3 g), weight of pulp at ripening time (102.3 g), moisture content of pulp (78.77%), moisture content of peel (85.41%) were found from B2 (white polythene). The combined effect of sucker age and bagging materials, the highest growth and yield like length of bunch (76.2cm), bunch weight per plant (14.58kg), weight all hands per bunch (13.04 kg) was found in A3B2 (3rd year sucker with white polythene). In a nutshell, the present study showed that different aged suckers and bunch covering had a better effect on physio-morphological characteristics, yield and quality.
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Ilqar Ahmadov, Sabina Tagiyeva, Ilqar Ahmadov, Sabina Tagiyeva, and Samira Mansurova Samira Mansurova. "INVESTIGATION OF THE INFLUENCE OF THE LOWERING DEPTH OF DOWNHOLE SUCKER-ROD PUMPS ON THE DELIVERY FACTOR." ETM - Equipment, Technologies, Materials 12, no. 04 (2022): 52–59. http://dx.doi.org/10.36962/etm12042022-52.
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It is well known that, at present, late stage fields are operated mainly by sucker-rod pumps. The pumps are usually operated in rather complicated technological and hydrodynamic conditions, strongly influencing its efficiency. In the article the possible influence of downhole sucker-rod pump (DSRP) depth on delivery factor that is one of the indicators of operating efficiency of the entire sucker-rod pumping unit is investigated on the basis of actual field information. The values of oil and water delivery coefficients were calculated and functional dependence on the depth of sucker-rod pump immersion was built. The results showed an increase in the oil supply coefficient and a decrease in its water supply coefficient in the considered ranges of values. Mathematical models of the dependencies were also obtained. As a result of the conducted research, the expediency of the controlled increase of the depth of suspension of pumps in the conditions of operation of the considered field is confirmed. Keywords: down-hole sucker-rod pump, delivery ratio, well operation, pump parameters, depth of pump suspension
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Svyantek, Andrej, Bülent Köse, John Stenger, Collin Auwarter, and Harlene Hatterman-Valenti. "Cold-Hardy Grape Cultivar Winter Injury and Trunk Re-Establishment Following Severe Weather Events in North Dakota." Horticulturae 6, no. 4 (2020): 75. http://dx.doi.org/10.3390/horticulturae6040075.
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Extreme winter temperatures during the 2018–2019 dormant season contributed to trunk collapse and complete trunk death of numerous genotypes throughout a diverse grapevine planting in eastern North Dakota, USA. Through the early portion of the dormant season, 12 genotypes were screened to identify lethal temperature exotherms of primary buds; from these results, none were anticipated to be fully prepared to survive the −37 °C minimum temperature recorded in the region. Trunk collapse, death, and survival were monitored for 35 replicated genotypes. New trunks were retrained from suckers and monitored for growth following trunk removal. Only five genotypes exceeded 50% trunk survival at the end of the 2019 growing season, ‘Valiant’, ‘King of the North’, ‘John Viola’, ‘Baltica’, and ‘Bluebell’. Following re-establishment, ‘La Crescent’ was the most vigorous genotype with the largest sucker circumference, sucker length, and internode length. Nearly all genotypes evaluated produced suckers with lengths approaching the high-wire trellis height (1.8 m), designating their potential for cordon retraining in 2020. Cumulatively, however, the lethal temperature exotherm results and the trunk survival examination indicate a harrowing need for investigation of new management practices (such as protected training systems) and the generation of new cold-hardy genotypes to enhance productivity under standard unprotected systems.
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Maleyka Mammadova, Hasan Hasanov, Maleyka Mammadova, Hasan Hasanov. "INCREASING THE WORKING CAPACITY OF THE SUCKER ROD PUMP." ETM - Equipment, Technologies, Materials 21, no. 03 (2024): 89–94. http://dx.doi.org/10.36962/etm21032024-14.
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The downhole pressure in many oil reservoirs across the world is insufficient to force the created fumes to the surface. Pumps are utilized to artificially lift the fluids in order to manufacture these fluids. Artificial lift techniques are used to generate oil from more than 70% of all active wells. Sucker rod pumps are among the most often used artificial lift techniques. As a well-respected technology in the oil and gas sector, sucker rod pumps are inexpensive to buy and operate, simple to use, and widely available. Numerous technological developments have been used to enhance the performance, applicability, and diagnostics of sucker rod pumps. With these developments, it's critical to be able to consistently offer an updated assessment and usage manual for the sucker rod-operated pumps. This study offers a current, thorough analysis of the parts of sucker rod pumps, diagnostic techniques, mathematical models, and typical field failures along with advice on how to reduce and prevent them. A new classification of all techniques that may be included in the sucker rod pump technology has been created, based on the review that was done and the newly released sucker rod pump techniques in the industry. This study also discusses a number of field case studies from wells all around the world to highlight some of the key characteristics of sucker rod pumps. Lastly, based on the revised evaluation, the benefits and drawbacks of sucker rod pumps are discussed. The results of this investigation can contribute to a deeper comprehension of the various sucker rod pumps and offer a comprehensive perspective on the sucker rod pump, including its characteristics and modeling. Keywords: sucker rod pumps, failures of sucker rods and their remedies, structure optimization.
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Tamilla Khankishiyeva, Tamilla Khankishiyeva, and Vuqar Ashiraliyev Vuqar Ashiraliyev. "INVESTIGATION AND RELIABILITY IMPROVEMENT OF ROD DOWNHOLE PUMP VALVE ASSEMBLY." ETM - Equipment, Technologies, Materials 13, no. 01 (2023): 83–91. http://dx.doi.org/10.36962/etm13012023-83.
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The purpose of the work: modernization of the valve, in order to increase reliability, wear resistance, increase the pump flow and reduce the load on the rod string. As well as improved durability. Object of work: Rod pump valve. Realization of the goal is achieved by performing the following tasks: 1. Overview of known designs of the valve assembly of a sucker rod pump; 2. Identification of a number of causes of valve failure, as well as its causes of wear; 3. Calculation of the main parameters of the pump; 4. Overview of the design of a sucker rod pump, to understand the problem; 5. Development of measures for the maintenance and repair of the pump. In the course of the WRC, a review and analysis of information on the designs of the valve assembly of a borehole rod pump was carried out. The problem of its wear has been studied. The problem of valve design is formulated and solved. At the moment, sucker rod pumps (SRP) and electric submersible pumps (ESPs) are used. Since the ESP has much higher production capabilities compared to the rod, the main volume of oil in the country is produced using ESP units. In view of the fact that the simplicity of the design of the SRPU is the most maintainable during practical operation, it is precisely such installations that are used at the moment. And also the positive aspects of the SRPU are the convenience of its adjustment, the small effect on the operation of the SRPU of the physical and chemical properties of the pumped liquid, the relatively high efficiency and the possibility of operating wells of small diameters, compared with other installations and methods of operation. However, SRPU oil production is based on relatively old oil production technology and techniques, especially for downhole and downhole equipment and technological operations carried out using this equipment. The development, manufacture and testing of new equipment is becoming especially relevant. The purpose of my project is to increase the filling factor of a sucker rod pump, as well as to increase the reliability of its operation after repairs. An increase in the filling ratio of the SRP is achieved by upgrading the valve assembly, and an increase in reliability. Keywords: sucker rod pump, valve part, abrasion, reliability, downhole pump, suction valve, discharge valve.
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Day, Julie L., Jennifer L. Jacobs, and Josh Rasmussen. "Considerations for the Propagation and Conservation of Endangered Lake Suckers of the Western United States." Journal of Fish and Wildlife Management 8, no. 1 (2017): 301–12. http://dx.doi.org/10.3996/022016-jfwm-011.
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Abstract Decades of persistent natural and anthropogenic threats coupled with competing water needs have compromised numerous species of freshwater fishes, many of which are now artificially propagated in hatcheries. Low survival upon release is common, particularly in systems with substantial nonnative predator populations. Extensive sampling for Shortnose (Chasmistes brevirostris) and Lost River Suckers (Deltistes luxatus) in the Klamath River Basin on the California–Oregon border have failed to detect any new adult recruitment for at least two decades, prompting an investigation into artificial propagation as an extinction prevention measure. A comprehensive assessment of strategies and successes associated with propagation for conservation restocking has not been performed for any Catostomid. Here, we review available literature for all western lake sucker species to inform propagation and recovery efforts for Klamath suckers and summarize the relevance of these considerations to other endangered fishes.
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Doherty, Chad A., Brendan Galloway, R. Allen Curry, and Kelly R. Munkittrick. "Performance of White Sucker Populations along the Saint John River Main Stem, New Brunswick, Canada: An Example of Effects-Based Cumulative Effects Assessment." Water Quality Research Journal 40, no. 3 (2005): 361–73. http://dx.doi.org/10.2166/wqrj.2005.040.
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Abstract White sucker (Catostomus commersoni) are widely distributed in North America and are often used in environmental monitoring. Whole organism characteristics of three white sucker populations determined to be resident (outside of spawning) within small sections of the Saint John River, New Brunswick, were studied in 2001 and 2002. Significant differences in performance characteristics were present among sites. The differences can be interpreted as either improved sucker performance at Florenceville (upstream site), or decreased performance at Woodstock. Without further investigation it is difficult to identify whether the apparent improved performance is a response to nutrient enrichment, or increased mortality associated with the recent prevalence of lesions. Confounding factors are also present. Daily water level fluctuations resulting from an upstream dam discharge may change habitat availability and/or diversity, thereby altering the fish community. Liver sizes in Saint John River white sucker are considerably larger than in fish collected in Ontario, but are not relative to nearby New Brunswick river populations. This has implications for the importance of reference site selection and understanding the natural variability within a species (intra-specific variation) on multiple spatial scales.
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Xankishiyeva, T. "INVESTIGATION OF THE DEPENDENCE OF DEFORMATION OF WELL SEAl OF A WIRE ROD PUMP." Sciences of Europe, no. 127 (October 25, 2023): 97–101. https://doi.org/10.5281/zenodo.10039436.
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The article considers the research of dependencies sealing force-deformation for various forms of wellhead seals with rectangular cross-section and with the conical edge downhole sucker rod pump. Determined the dependence of the optimal force - deformation of the omental element with methods variation.
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Neeraj, Kumar, Bajaj Rachana, and Soni Kapil. "Pushover Analysis of Reinforced Concrete Structure Using Staad Pro." Journal of Earthquake Science and Soil Dynamics Engineering 2, no. 2 (2019): 1–9. https://doi.org/10.5281/zenodo.3383409.
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With the gigantic death toll and property saw over the most recent few decades alone in India, because of disappointment of structures brought about by tremors, consideration is presently being given to the assessment of the sufficiency of solidarity in encircled RC structures to oppose solid ground movements. A 50-year old four story (8-sound and 3-outline) strengthened solid structure has been considered in this examination, which lies in Zone II, as indicated by IS 1893:2000 characterization of seismic zones in India. Brick work infills have been considered as non-basic individuals during this whole investigation. Inelastic static examination, or sucker investigation, has been the favored strategy for seismic execution assessment because of its straightforwardness. It is a static examination that straightforwardly consolidates nonlinear material attributes. Inelastic static investigation systems incorporate Capacity Spectrum Method, Displacement Coefficient Method and the Secant Method. The structure has been assessed utilizing Pushover Analysis, a non-direct static method, which might be considered as a progression of static examination did to build up a weakling bend for the structure. The structure is re-enacted in SeismoStruct Version 5.2.2 in the wake of being planned in STAAD. Pro v8i by considering M20 cement and Fe415 steel support. The sucker bend is produced by pushing the top hub of structure to the constraining relocation and setting proper execution criteria. The objective relocation for the structure is inferred by bi-linearization of the acquired sucker bend and consequent utilization of Displacement Coefficient Method as per ASCE 41-06. The investigation is then done for 150% of the determined objective dislodging for the structure to watch the yielding of the individuals and the sufficiency of the basic quality. The degree of harm experienced by the structure at the objective dislodging is viewed as portrayal of the harm that would be experienced by the structure when exposed to configuration level ground shaking.
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Ganiev, A. M., V. D. Gadzhiev, M. D. Shlyakhovskii, and �. R. Allakhverdov. "Investigation of accuracy in automated production of sucker rod pump couplings." Chemical and Petroleum Engineering 26, no. 12 (1990): 635–36. http://dx.doi.org/10.1007/bf01147551.
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Wang, Zihui, Xuewu Zhu, Xiaoxiang Cheng, et al. "Nanofiltration Membranes with Octopus Arm-Sucker Surface Morphology: Filtration Performance and Mechanism Investigation." Environmental Science & Technology 55, no. 24 (2021): 16676–86. http://dx.doi.org/10.1021/acs.est.1c06238.
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Castro-Santos, Theodore. "Quantifying the combined effects of attempt rate and swimming capacity on passage through velocity barriers." Canadian Journal of Fisheries and Aquatic Sciences 61, no. 9 (2004): 1602–15. http://dx.doi.org/10.1139/f04-094.
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The ability of fish to migrate past velocity barriers results from both attempt rate and swimming capacity. Here, I formalize this relationship, providing equations for estimating the proportion of a population successfully passing a barrier over a range of distances and times. These equations take into account the cumulative effect of multiple attempts, the time required to stage those attempts, and both the distance traversed on each attempt and its variability. I apply these equations to models of white sucker (Catostomus commersoni) and walleye (Stizostedion vitreum) ascending a 23-m-long flume against flows ranging from 1.5 to 4.5 m·s1. Attempt rate varied between species, attempts, and over time and was influenced by hydraulic variables (velocity of flow and discharge). Distance of ascent was primarily influenced by flow velocity. Although swimming capacity was similar, white sucker had greater attempt rates, and consequently better passage success, than walleye. Over short distances, models for both species predict greater passage success against higher velocities owing to the associated increased attempt rate. These results highlight the importance of attraction to fish passage and the need for further investigation into the hydraulic and other environmental conditions required to simultaneously optimize both attempt rate and passage success.
13
Kurbanov, A. K. "Investigation of the interrelationship of the production operations of oil-well sucker-rod pump sleeves." Chemical and Petroleum Engineering 22, no. 8 (1986): 395–99. http://dx.doi.org/10.1007/bf01179362.
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Isaev, A. A. "INVESTIGATION OF A ROTOR SPEED EFFECT ON A SCREW PUMP’S DELIVERY RATE AND SUCKER-RODS BREAKAGE." Oilfield Engineering, no. 12 (2018): 53–58. http://dx.doi.org/10.30713/0207-2351-2018-11-53-58.
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BAIG, MIRZA AAMIR, and Tanveer Sultan Bhat. "SEISMIC UPGRADATION OF TALL BUILDINGS." International Journal of Engineering Science Technologies 4, no. 5 (2020): 6–15. http://dx.doi.org/10.29121/ijoest.v4.i5.2020.107.
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High rises have involved interest for engineers for as long as century. All the more along these lines, the previous thirty years have seen various structures ascending starting from the earliest stage, resisting gravity. Burj Khalifa Dubai, Taipei, Petronas twin pinnacle, Empire state building are a portion of the living instances of designing wonders.
 What befalls a structure when it arrives at such inconceivable statures separated from the awe that it will be, it additionally represents a gigantic measure of challenge for the auxiliary architect. Since then these structures are looked by administration stacking conditions. Two destroying powers of nature, wind and seismic tremor become truly basic for these structures. The harmony among firmness and pliability to be given turns into the controlling components to the plan of such structures. Routinely giving enough firmness against colossal burdens doesn't appear to fulfill the necessities. These structures are frequently given adequate pliability so as to disperse the gigantic measure of powers. In any case, there is a limit, with respect to how much malleability can be given in a structure. A fast figuring shows that the highest-level uprooting that can be securely borne by a 500 m tall structure is nearly 2m. The structure would not fall flat if its popular narrative dislodges by 2m.
 Use of different sorts of dampers and isolators have been utilized in disseminating this vitality. Much exploration has gone into advancement of TMDs, ATMDs, BTMDs, and seismic base isolators. Examination has additionally gone into different kind of investigations method as more vigorous powerful examination, weakling investigation, time history investigation and execution-based investigation.
 Here an endeavor has been made to explore the near benefits and negative marks of various sorts of auxiliary arrangements to comprehend their conduct under seismic and wind loads. The structure considered is of 50 stories. Different designs that have been considered incorporates propped frameworks, shear divider frameworks, dampers and isolators. The investigations results have been organized and plotted to comprehend their conduct. Time history examination and execution-based investigation by sucker investigation have additionally been concentrated to comprehend the conduct of structures.
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Khatun, Most Jharna, and Subrata Mondal. "Ornamental fishes in Khulna City, Bangladesh: culture practices and commercial aspects." Asian-Australasian Journal of Bioscience and Biotechnology 4, no. 3 (2019): 142–53. http://dx.doi.org/10.3329/aajbb.v4i3.65074.
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An investigation was carried out to provide an initial assessment of aquarium fish trade from December 2018 to May 2019 in Khulna city, Khulna of Bangladesh. A total 12 shops were established in this district where 46 aquarium fish species were found of which 12 species were bred for fry production. In the study area, some ornamental fishes such as Gold fish, Black moor, Comet, Red parrot, Tiger barb, Angel fish, Black molly, Guppy, koi carp, Rosy barb, Silver shark, Rainbow shark, Tiger shark, Sucker mouth catfish, Blue gourami, Pearl gourami, Golden gourami, White molly, Pearl scale gold fish, Silver dollar, LT sucker fish were very common. Besides Glass catfish, Siamese fighting fish, calico, Swordtail, Oscar, Widow tetra, Neon tetra, Balloon molly, Moon tail balloon molly, Alligator gar were common and Tangerrine swordtail, Arowana, Flower horn, Red tail black shark, platy, cardinal tetra, Discuss fish, Rummy nose, Bolivian ram, Balloon ram, Bosemoni rainbow, Red tail catfish, Bichir, Mono angel, Knife fish were the rare fish of the Khulna city. All aquarium fish species were brought from catabon area of Dhaka city that were mainly imported from the international markets like India, Singapore, Thailand, etc. Importers/wholesalers and breeders marketed them to retailers, local breeders, shopkeepers, etc. and finally, the shopkeepers sold them to the aquaria owners. The most profitable large aquarium fishes were Gold fish which made a profit of (100±20 tk/pair), Black moor (150±20 tk/pair), Red parrot (250±50 tk/pair), angelfish (100±10 tk/pair), Pearl gourami (300±50 tk/pair), Guppy (400±50 tk/pair), Siamese Fighting Fish (300±50 tk /piece), Tiger Shark (40±10 tk/pair), Sucker mouth catfish (50±5 tk/pair) to the retailers. During this survey, it was found that the breeders used cement tank, glass aquaria, plastic tank and even plastic jar as culture tanks. They bred aquarium fish all over the year. In the present study the market is mainly domestic. There is a good domestic market which is increasing day by day. Except winter, average annual income was recorded 13,140,000 Tk from the 12 aquarium shops. However, when temperature dropped during winter, sale became reduced; sometimes no selling was also observed during this time.
 Asian Australas. J. Biosci. Biotechnol. 2019, 4 (3), 142-153
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Kreshchenko, Natalia, Nadezhda Terenina, and Artem Ermakov. "Serotonin Signalling in Flatworms: An Immunocytochemical Localisation of 5-HT7 Type of Serotonin Receptors in Opisthorchis felineus and Hymenolepis diminuta." Biomolecules 11, no. 8 (2021): 1212. http://dx.doi.org/10.3390/biom11081212.
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The study is dedicated to the investigation of serotonin (5-hydroxytryptamine, 5-HT) and 5-HT7 type serotonin receptor of localisation in larvae of two parasitic flatworms Opisthorchis felineus (Rivolta, 1884) Blanchard, 1895 and Hymenolepis diminuta Rudolphi, 1819, performed using the immunocytochemical method and confocal laser scanning microscopy (CLSM). Using whole mount preparations and specific antibodies, a microscopic analysis of the spatial distribution of 5-HT7-immunoreactivity(-IR) was revealed in worm tissue. In metacercariae of O. felineus 5-HT7-IR was observed in the main nerve cords and in the head commissure connecting the head ganglia. The presence of 5-HT7-IR was also found in several structures located on the oral sucker. 5-HT7-IR was evident in the round glandular cells scattered throughout the larva body. In cysticercoids of H. diminuta immunostaining to 5-HT7 was found in flame cells of the excretory system. Weak staining to 5-HT7 was observed along the longitudinal and transverse muscle fibres comprising the body wall and musculature of suckers, in thin longitudinal nerve cords and a connective commissure of the central nervous system. Available publications on serotonin action in flatworms and serotonin receptors identification were reviewed. Own results and the published data indicate that the muscular structures of flatworms are deeply supplied by 5-HT7-IR elements. It suggests that the 5-HT7 type receptor can mediate the serotonin action in the investigated species and is an important component of the flatworm motor control system. The study of the neurochemical basis of parasitic flatworms can play an important role in the solution of fundamental problems in early development of the nervous system and the evolution of neuronal signalling components.
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Sosnin, R. Ya, A. Z. Shayakhmetov, D. A. Boreyko, and V. Yu Bliznyukov. "Experience of faults and defects investigation of downhole sucker-rod pumping units based on the industrial safety expertise data." Construction of Oil and Gas Wells on Land and Sea, no. 4 (2023): 16–23. http://dx.doi.org/10.33285/0130-3872-2023-4(364)-16-23.
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Tahir Suleymanov, Tahir Suleymanov, Suleyman Efendi Suleyman Efendi, and Aybeniz Amirova Aybeniz Amirova. "IMPROVEMENT OF OPERATING CAPACITY OF OIL PRODUCTION EQUIPMENT CONSIDERING THE INFLUENCE OF DYNAMIC LOADS." ETM - Equipment, Technologies, Materials 14, no. 02 (2023): 84–92. http://dx.doi.org/10.36962/etm14022023-84.
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In the presented article, the analysis of the effect of the dynamic load falling on the polished rod of the sucker rod pump unit on the normal function of the operating unit during the oil extraction process was carried out. The general formula for the damage caused by the impact of the pump's wellhead packing seal has been derived. The dependence graph of damaged work on the length of the packing seal and the Poisson's ratio of the material was made. Due to the dynamics of the frictional force generated in the packing seal of the stuffing box appropriately located below the suspension point of the rods, its forced cyclic movement occurs as a result of the impact transmitted to the system which consists of an incompressible fluid column, and the elastic rods. This requires the investigation of the dynamics of the rod pump associated with the probability of unpleasant situations such as the possible resonance occurrence in the specified system, the time between repairs, and the reduction of the working coefficient of the pump, in this regard. At the same time, the questions such as the coefficient of friction depending on the selection of the material of the packing seal, the reduction of the dynamic accumulation of the load on the system, and the saving of electric energy are also important. It needs to be considered that the operation process is accompanied by a certain energy loss. It should be taken into account that even a small reduction in energy loss can manifest great economic benefits. It should be noted that some issues encountered in the process of operation of oil wells through the rod pump and depending on certain arguments affecting this process were also resolved by those experts. Keywords: oil production, frictional force, sucker road pump, dynamic load, logging operations, logging cable, separator, energy loss, wellhead packing seal
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Markad, Ganesh, and Vinod Kakade. "Length-Weight and Length-Length Relationships of Garra mullya (Sykes, 1839) from Ujani Wetland of Maharashtra, India." UTTAR PRADESH JOURNAL OF ZOOLOGY 44, no. 11 (2023): 53–60. http://dx.doi.org/10.56557/upjoz/2023/v44i113520.
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Length-weight relations give information on growth patterns and condition of fish. LWRs data is very useful for proper management and good exploitation of population of fish species. Length-weight relations are used for providing information on body growth pattern of species whether it is isometric or allometric. The present study was conducted on Garra mullya commonly called stone sucker fish for investigation of length-weight relationships (LWRs) from Ujani wetland, a dam constructed on Bhima river of Maharashtra, India. During the study period of November 2021 to October 2022, total of 202 samples were collected from local fishermen. The intercept (a value) was found to be 0.01126 and slope (b value) was 3.0499 which are in expected range of 2.5 to 3.5. The slope value was found almost equal to 3 and it indicated isometric growth of fish. Fulton’s condition factor was 1.2798 that was more than 1.0 and indicated that fishes were in good physical form in habitat.
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Jiang, Minzheng, Siyuan Chang, and Kangxing Dong. "Research on working condition diagnosis method of downhole oil-water separation system with sucker-rod pump." Advances in Mechanical Engineering 15, no. 4 (2023): 168781322311621. http://dx.doi.org/10.1177/16878132231162186.
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Compared with the rod-pumping oil production system of the conventional pumping unit, the structure of the down-hole oil-water separation system from the rod pump is more complicated, and the down-hole working conditions are worse. Existing technology no longer meets the needs of its downhole condition diagnosis. It seriously affected the production output and economic benefits of the oil field. Because of this, a fault pre-diagnosis method for the downhole oil-water separation system from the rod pump was proposed. Through the theoretical calculation of oil well production and pump efficiency. After field investigation and collection of many suspension point indicators diagrammed for comparison and analysis, the injection pump’s failure probability was 90% above. At this time, the extraction pumps work normally. Therefore, a reverse calculation method is proposed: establish and solve the static/dynamic load model of the production pump, and obtain the load-displacement function of the production pump. The load-displacement function of the suspension point derived from the suspension point indicator diagram is subtracted from the calculated load-displacement function of the production pump to obtain the load-displacement function of the injection pump so that the working condition diagnosis can be performed according to the injection pump work diagram. In the application of 18 wells within the field, the judgment result of injection pump failure and the result of pump inspection coincided with 91.3%, which verified the correctness of the calculation model. This method provides necessary theoretical guidance for the field application and working condition diagnosis of rod pump downhole oil-water separation system and is of great significance for improving the comprehensive benefit of oilfield production.
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Nikolić, Vera, Branka Bilbija, Zlatko Nedić, Predrag Simonović, and Vesna Djikanović. "First record of Azygia robusta (Odhner, 1911) (Trematoda: Digenea: Azygiidae) in brown trout (Salmo trutta) in the VRBAS River." Croatian Journal of Fisheries 76, no. 2 (2018): 85–88. http://dx.doi.org/10.2478/cjf-2018-0011.
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Abstract The investigation of fish parasites in Bosnia and Herzegovina in recent years became significant, and therefore new records of parasitic trematodes and their hosts are important for better understanding of fish parasitology and pathology. In this study 41 parasitic specimens were collected and the basic taxonomical characters were measured (body length and width, diameter of oral and ventral sucker, length and width of pharynx, ovary length and width, testes length and width and eggs length and width). After the sampling of the parasites, they were collected and conserved in 70% ethanol. After that procedure the aforementioned characters were measured using Digimizer Image Analyzer Version 4.1. After all measurements, the trematode parasite Azygia robusta was confirmed for the first time on brown trout Salmo trutta. This first record was found in the Vrbas River near Banja Luka, Bosnia and Herzegovina (Sava River Basin). Former records of this parasite in Europe were observed on other salmonid fish species, as huchen Hucho hucho. This new record should be very important part of data of fish parasitology in Bosnia and Herzegovina.
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Sandell, P. R. "Implications of rabbit haemorrhagic disease for the short-term recovery of semi-arid woodland communities in north-west Victoria." Wildlife Research 29, no. 6 (2002): 591. http://dx.doi.org/10.1071/wr00089.
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As part of the National RHD Monitoring and Surveillance Program, an investigation was conducted into the implications of reduced rabbit abundance (as a consequence of rabbit haemorrhagic disease, RHD) for the recovery of degraded woodlands in the Hattah area of north-west Victoria. Both structural and floristic changes were assessed within woodland communities, which are at risk after 140 years of intensive grazing. General recovery in the pasture layer was demonstrated in terms of the improved status of 'decreaser' plant response groups — palatable species. 'Increasers' (weeds) were also found to have benefited in some circumstances but not to the same extent as the decreaser groups. Evidence of structural changes was restricted to increased persistence of sucker regrowth, particularly of cattle bush (Alectryon oleifolius subsp. canescens). No evidence was found of widespread germination of woody seedlings, which is not surprising given the episodic nature of such regeneration events. The interaction of grazers was also investigated by means of a network of grazing exclosures. Less floristic benefit was associated with relatively high kangaroo densities at one location and with stock grazing at another.
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Diyana, J. Nur Alia, M. I. Nur Mahiza, H. Latiffah, et al. "Occurrence, Morphometric, and Molecular Investigation of Cattle and Buffalo Liver Adult Fluke in Peninsular Malaysia Main Abattoirs." Journal of Parasitology Research 2020 (June 12, 2020): 1–6. http://dx.doi.org/10.1155/2020/5436846.
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Fascioliasis is a parasitic disease of human and animal caused by Fasciola gigantica (F. gigantica) and Fasciola hepatica (F. hepatica). More than 700 million of grazing animals and over 180 million human population are at the risk of fascioliasis. This study was conducted in Banting, Ipoh, Shah Alam, and Taiping abattoirs within Peninsular Malaysia to determine the occurrence and identify the species of liver flukes, causing liver condemnation in cattle and buffaloes. Within a study period from January to December 2018, a total of 25 condemned bovine livers were collected from Banting, Ipoh, Shah Alam, and Taiping abattoirs and analyzed. Taiping abattoir had the highest occurrence of fascioliasis [14/1014 (1.38%)], and Shah Alam abattoir had the least occurrence [1/3377 (0.03%)]. From all the sampled livers, the average number of adult flukes recorded ranged from 1 to 83. A total of 440 adult flukes were studied morphometrically, using parameters such as body length (BL), body width (BW), cone length (CL), cone width (CL), body area (BA), body perimeter (BP), the distance between the ventral sucker and posterior end of body (VS-P), BL/BW ratio, BL/V-SP, and body roundness (BR). Furthermore, molecular analysis was conducted using PCR-RFLP methods to distinguish between F. gigantica and F. hepatica involving ITS1 primer and RsaI restriction enzyme. RFLP pattern with RsaI produced a consistent pattern of 360,100 and 60 bp fragments in F. hepatica, whereas F. gigantica worms had a profile of 360,170, and 60 bp in size. The morphometric and molecular analysis results indicated that cattle and buffaloes slaughtered at Banting, Shah Alam, Taiping, and Ipoh abattoirs were infected with F. gigantica.
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McReynolds, A. T., M. L. Hoff, A. A. Sikora, et al. "Adult and larval fish assemblages vary among small tributary mouths of Green Bay, Lake Michigan." Canadian Journal of Zoology 99, no. 4 (2021): 319–29. http://dx.doi.org/10.1139/cjz-2020-0143.
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Small tributaries of the Great Lakes serve as important habitat during critical life stages of many fish species, though temporal and spatial dynamics of the assemblage that uses these systems are seldom investigated. This study quantifies larval and adult fish assemblages captured by fyke net and light traps among small tributary mouths of Green Bay, Lake Michigan. Ten tributaries harbored a total of 45 species representing 17 families, with the most abundant including spottail shiner (Notropis hudsonius (Clinton, 1824)) in adult assemblages and white sucker (Catostomus commersonii (Lacepède, 1803)) in larval assemblages. Larval fish assemblage structures differed over five biweekly sampling events in May and June. Adult fish assemblage structures varied among tributaries but not among spring, summer, and fall samples. Larval and adult species assemblages at these river mouths are likely influenced by hydrology, habitat structure, and species-specific ecology. Water movement may transport larvae into river mouths, as larval assemblages were dominated by species that spawn in coastal habitats. Adult species richness varied with longitude, with the greatest diversity in tributaries on the west shore. This investigation of fish assemblages highlights the spatial and temporal variation that occurs in these systems and their role in shaping fish populations in Green Bay.
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PRIYANKA, K., V. SWATHI, and K. ROJA. "Dynamic Response of High Rise Structures Under the Influence of Shear Walls." International Journal of Engineering & Technology 7, no. 3.35 (2018): 55. http://dx.doi.org/10.14419/ijet.v7i3.35.29147.
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This examine gives the procedure to seismic generally speaking execution estimation of over the top ascent homes principally dependent on an idea of technique in the limit range. In 3D scientific configuration of thirty storied structures were produced for symmetric home Models and inspect the utilize of auxiliary assessment device ETABS. The systematic model of the building incorporates each and every single fundamental part that disturb the deformability of the shape, firmness, mass and power. To consider the impact , divider of solid center ,and shear at unprecedented positions for the span of tremor, seismic assessment the utilization of direct unique, straight staticand non-straight static framework has been done. The avoidances at each and every story arrange has been looked at by utilizing seeming Equivalent static, reaction range approach notwithstanding sucker method has supplementary been done to decide potential, request and execution level of the thought about design of buildings. From the underneath research it has been resolved that non-direct weakling investigation give amazing appraisal of world and in increasing nearby inelastic twisting needs and furthermore displays plan shortcoming that could stay covered up in a versatile examination and also the execution phase of the structure. Story floats are seen in the confine as particular by code (IS: 1893-2002) indirect unique, Equivalent static and nonlinear static assessment.
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Abhishek, Kumar Chimaniya, Kumar Singh Chandrakar Vinay, and Singh Tomar Praveen. "Evaluate the Magnification Factors for Building with Respect to Zone and Height of the OGS Building." Journal of Structural Technology (e-ISSN: 2581-950X) 4, no. 3 (2019): 46–51. https://doi.org/10.5281/zenodo.3374465.
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Infill dividers can be showed up in business programming using two-dimensional zone part with fitting material properties for direct flexible examination. In any case, this kind of showing may not work for non-direct examination since the non-straight material properties for a two-dimensional orthotropic area isn't amazingly knew. Seismic evaluation of a current reinforced bond (RC) encompassed structure would reliably require a non-straight examination. Spread piece around there supports a straight slanting swagger way to deal with oversee manage model infill divider for both direct (Equivalent Static Analysis and Response Spectrum Analysis) and nonlinear examinations (Pushover Analysis and Time History Analysis). A current RC confined structure (G+3) with open ground story composed in Seismic Zone-V is considered for this examination. This structure is dismembered for two exceptional cases: (a) considering both infill mass and infill quality and (b) considering infill mass yet without considering infill consistent quality. Two separate models were made using business programming STAAD PRO. Infill burdens were appeared through applying static dead weight and separating masses considered from this dead weight for fragment examinations. Infill quality was exhibited using to the opposite side swagger procedure. Two irrefutable sponsorship conditions, expressly changed end fortify condition and stuck end reinforce condition, are considered to check the effect of assistance conditions in the duplication factors. Straight and non-direct examinations were rehearsed for the models and the results were considered. The examination results exhibit that a section of 2.5 is too high to even consider evening consider night consider being in any capacity reached out to the bar and part powers of the ground story of low-climb open ground story structures. This examination expect that the issue of open ground story structures can't be seen fittingly through flexible examination as the quality of open ground story building and a proportionate revealed edge building are fundamentally same. Nonlinear examination reveals that open ground story making misses the mark through a ground story part at an essentially low base shear and evacuation and the procedure for disappointment as far as anyone knows is touchy. Speedy and nonlinear examinations exhibit that sponsorship condition impacts the response broadly and can be a basic parameter to pick the power augmentation part.
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Ara, N., M. Moniruzzaman, R. Khatoon, and M. Moniruzzaman. "Evaluation of plantain genotypes for yield and other characters." Bangladesh Journal of Agricultural Research 43, no. 1 (2018): 71–80. http://dx.doi.org/10.3329/bjar.v43i1.36159.
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An experiment was carried out at the Regional Agricultural Research Station, BARI, Ishurdi, Pabna during 2013-15, with eleven genotypes of plantain to evaluate their performances for yield attributes, yield and quality characters. The genotypes included in this investigation were MP001, MP002, MP003, MP006, MP007, MP015, MP018, MP024, MP025, ISD002 and BARI Kola-2 as check. The experiment was laid out in randomized complete block design with three replications. The genotype MP002 produced the maximum number of fingers/bunch (105.67) closely followed by BARI Kola-2 (103.00) and MP015 (101.00). Both the genotypes MP024 and MP025 showed the highest fruit length (21.70 cm), but ISD002 gave the maximum fruit girth (16.78 cm), which was statistically similar with that of MP003 (16.30 cm) and MP024 (16.33 cm). The highest yield and the maximum number of hands were produced by the genotype MP024 (47.81 t/ha and (8.33/bunch) followed by MP015 (36.70 t/ha and 6.33/bunch). Fingers of the genotypes required boiling time in the range of 20.00 min (MP001) to 15.00 min (BARI Kola-2). Flesh of all genotypes possesses pleasant aroma except MP002, MP003 and ISD002. Among the eleven genotypes MP001, MP006, MP007, MP008, MP015 and MP024 were found better when cooked as smashed. The genotype ISD002 took the maximum time (467.33 days) to reach the edible maturity stage of fruits whereas MP024 required the minimum (339.00 days). The genotypes MP015 and MP024 performed better than BARI Kola-2 in respect of bunch weight, fruit size, productivity index, yield, sucker production and qualitative characters.Bangladesh J. Agril. Res. 43(1): 71-80, March 2018
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Medhane, H. B., R. S. Bhadange, S. D. Surbhaiyya, N. S. Pachpor, and R. S. Nandre. "An Efficient Protocol for In vitro Regeneration and Acclimatization of Banana (Musa spp.) cv. Grand Naine." International Journal of Plant & Soil Science 35, no. 15 (2023): 192–99. http://dx.doi.org/10.9734/ijpss/2023/v35i153096.
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Aim: The study was undertaken with a view to standardize a protocol for in vitro regeneration of Banana cv. Grand naine using shoot tip of sucker as an explant
 Methodology: In present study, explants sterilized with different sterilizing agents such as Tween-20 (1%), Bavistin (0.5-1%), Streptomycin sulphate (250 mg/L), Ascorbic acid (150 mg/L) + Citric acid (100 mg/L), HgCl2 (0.1%) and 70% ethanol.Sterilized explants were cultured on Murashige and Skoog (MS) medium supplemented with different concentrations of plant growth hormones for shoot initiation BAP alone (1.5, 2.0, 4.0, 6.0 mg/L) and BAP (3.0 mg/L) in combination with IAA and IBA (2.0 mg/L), elongation BAP (3.0 mg/L) and NAA (1.0, 1.5, 2.0 mg/L) and rooting IAA (1.0, 1.5 mg/L) and IBA (1.0, 1.5 mg/L). Primary and secondaryhardening was done in potting mixture containing autoclaved black soil: vermicompost: cocopeat (1:1:1) and garden black soil, cocopeat and red soil (1:1:1) respectively.
 Results: In present investigation 1% Bavistin (fungicide) showed maximum respond to prevent fungal contamination. Highest shoot initiation (100%) was observed on a MS medium fortified with BAP (1.5 mg/L). Maximum shoot length (10.7 cm) was recorded on a MS medium supplemented with BAP (3.0 mg/L) + NAA (2.0 mg/L) + Activated charcoal. Maximum root initiation was observed on half strength MS medium supplemented with IAA (1.5 mg/L). In vitro regenerated plantlets hardened on the mixture of autoclaved black soil: vermicompost: cocopeat (1:1:1). After 14 weeks In vitro plantlets transferred in green house for acclimatization where, 80% survival rate was recorded.
 Conclusion: Regeneration protocol was successfully standardized. Therefore, itcan be used for large scale propagation of healthy, disease and virus free planting material and In vitro propagation helps to meet higher demand of healthy planting material within shorter period.
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van den Heuvel, Michael R., Pierre H. Martel, Tibor G. Kovacs, et al. "Evaluation of Short-Term Fish Reproductive Bioassays for Predicting Effects of a Canadian Bleached Kraft Mill Effluent." Water Quality Research Journal 45, no. 2 (2010): 175–86. http://dx.doi.org/10.2166/wqrj.2010.021.
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Abstract Under the Canadian Environmental Effects Monitoring (EEM) program for pulp and paper effluents, the observation of a national response pattern of decreased gonad size and increased fish condition and liver size has triggered a centralized multiagency investigation of cause (IOC) of reproductive impacts in fishes. The purpose of the component of the IOC study presented here is to compare a number of fish bioassays for determining reproductive and reproductive-endocrine effects of a bleached kraft mill effluent. The bleached kraft mill chosen for this study had demonstrated the national response pattern in previous EEM cycles. The bioassays employed to examine reproduction were fathead minnow (Pimephales promelas) 5- and 21-d, mummichog (Fundulus heteroclitus) 25-d, and zebrafish (Danio rerio) 7-d tests, all of which had egg production as the primary reproductive endpoint. Additional bioassays examining reproductive-endocrine endpoints included a 7-d mummichog test, a 7- and a 21-d threespine stickleback (Gasterosteus aculeatus) test, a rainbow trout (Oncorhynchus mykiss) 7-d test, and in vitro sex steroid receptor and plasma protein binding bioassays. The zebrafish and fathead minnow reproductive tests showed significant suppression of egg production at the 100% effluent concentration. Endocrine data derived from the tests showed that this effluent did not impact steroidogenic endpoints at any concentration. Bioassays showed that this effluent i) was capable of eliciting cytochrome P4501A induction at as low as 10% vol/vol effluent, ii) was weakly androgenic at 10% vol/vol, and iii) showed no evidence of in vivo estrogenicity. These results were consistent with in vitro receptor binding assays showing a highly variable level of androgenic equivalents over six months of effluent testing, with little evidence of estrogenic activity. Bioassay results were consistent in that the overall conclusion was that this effluent has only a weak potential to cause reproductive impairment and would likely not do so at environmentally relevant concentrations. Field studies and a fathead minnow lifecycle study conducted concurrently were in agreement with reproductive bioassay results as white sucker exposed in the receiving environment no longer had significantly reduced gonadal development. Overall, this study provided evidence that the laboratory assays evaluated for various reproductive endpoints have potential application for future IOC work.
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Tracy, Bryn H., Robert E. Jenkins, and Wayne C. Starnes. "History of Fish Investigations in the Yadkin–Pee Dee River Drainage of North Carolina and Virginia with an Analysis of Nonindigenous Species and Invasion Dynamics of Three Species of Suckers (Catostomidae)." Journal of North Carolina Academy of Science 129, no. 3 (2013): 82–106. http://dx.doi.org/10.7572/2167-5880-129.3.82.
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Abstract North Carolina's river drainages continue to lose their faunal distinctiveness as nonnative fish species establish themselves and expand their distributions, resulting in biotic homogenization. One such example is the Pee Dee drainage on the Atlantic Slope. It is the most speciose drainage in North Carolina, inhabited by 113 species of which 34 are nonindigenous, many introduced from adjacent drainages. The history of fish investigations in the Pee Dee in North Carolina and Virginia is detailed herein. The fauna was first sampled by Cope in 1869 at two conjoined sites—Yadkin River and Gobble Creek, a small tributary at the Yadkin River site (Cope 1870). Cope described numerous new taxa from the drainage, and many subsequent researchers provided data that show additions of nonnative faunal elements. As a case study, indications are that Hypentelium roanokense, Roanoke Hog Sucker, Hypentelium nigricans, Northern Hog Sucker, and Moxostoma rupiscartes, Striped Jumprock, were cryptically introduced after the late 1950s. The Roanoke Hog Sucker, introduced as recently as the 2000s, is found only in three tributaries of the Ararat subsystem in North Carolina and Virginia. The Northern Hog Sucker has expanded its range very little, confined primarily to the North Fork Reddies and Ararat subsystems and a short segment of the mainstem Yadkin River in North Carolina. The Striped Jumprock is now in much of the upper Yadkin system, but not in Virginia, and at several sites in the South Yadkin subsystem. Natural dispersal of all three species is limited by dams and impoundments, but the dispersal by Striped Jumprock has probably been aided by multiple bait bucket introductions. Consequences of nonindigenous species introductions in the drainage are well known for some species but unknown for the Roanoke Hog Sucker, Northern Hog Sucker, and Striped Jumprock.
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Muhamad, Muhamad Zahid, Mad Nasir Shamsudin, Nitty Hirawaty Kamarulzaman, Nolila Mohd Nawi, and Jamaliah Laham. "Investigating Yield Variability and Technical Efficiency of Smallholders Pineapple Production in Johor." Sustainability 14, no. 22 (2022): 15410. http://dx.doi.org/10.3390/su142215410.
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This research investigates the efficiency of pineapple production in Malaysia using the stochastic frontier model with flexible risk features and a sample of 290 pineapple farms by smallholders in Johor. The results of the study indicate that the trans log model is the best match for the mean output function, while input factors, such as sucker, fertilizer, agrochemicals, labor, and hormones, have a positive effect on pineapple yield with rising returns to scale. The study also finds that fertilizers and hormones are risk increasing inputs, whilst sucker is classified as a risk decreasing input. The total farm-specific characteristics account for the difference in the mean technical efficiency, which is estimated to be 68.1%. The study shows that, on average, 31.9 percent of the potential output is wasted owing to technical inefficiency and production risks in inputs. However, the optimal production of pineapple is facilitated by the application of the best agricultural techniques.
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Maіstruk, Volodymyr, and Volodymyr Dzіndzura. "Investigation of cyclon operation modes with intermediate removal of deposed dust." Avtomatizacìâ virobničih procesìv u mašinobuduvannì ta priladobuduvannì 55 (2021): 88–94. http://dx.doi.org/10.23939/istcipa2021.55.088.
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Goal. The problem can be solved in research by studying the effect of the ratio of the volume of gas passing through the dust unloading holes to the amount of gas passing through the tangential inlet to the hydraulic resistance and cleaning efficiency in the cyclone with intermediate removal of precipitated dust. Actualіty of the work is that the establishment of the optimal ratio between the flow of air sucked through the dust holes and the total air flow in the cyclone with intermediate removal of deposited dust will obtain the highest efficiency of this type of device while reducing hydraulic resistance. The method is that to determine the hydraulic resistance and cleaning efficiency using CFD - programs in the CAD - program was built a cyclone model with intermediate removal of deposited dust, the design of which is presented in [5] by the method according to [6]. Results. The optimal ratio between the flow of air sucked through the dust unloading holes and the total air flow in the cyclone with the intermediate removal of deposited dust for different connection schemes of the device. Scientific novelty. For the first time with the help of theoretical researches the optimum ratio between the expenses of the air sucked out through dust unloading openings and the general expenses of air in a cyclone with intermediate removal of the deposited dust is established. Practical significance. The use in a cyclone with intermediate removal of deposited dust, the optimal ratio between the flow of air sucked through the dust discharge holes and the total air flow allows to obtain higher efficiency of air purification from dust at lower energy costs.
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Parrott, Joanne L., L. Mark Hewitt, Tibor G. Kovacs, et al. "Responses in a Fathead Minnow (Pimephales promelas) Lifecycle Test and in Wild White Sucker (Catostomus commersoni) Exposed to a Canadian Bleached Kraft Mill Effluent." Water Quality Research Journal 45, no. 2 (2010): 187–200. http://dx.doi.org/10.2166/wqrj.2010.022.
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Abstract To evaluate currently available bioassays for their use in investigating the causes of pulp and paper mill effluent effects on fish reproduction, the responses of wild white sucker (Catostomus commersoni) collected from the receiving environment at the bleached kraft mill at La Tuque, Quebec, were compared with responses of fathead minnow (Pimephales promelas) exposed to effluent in a laboratory lifecycle test. White sucker collected at effluent exposed sites had increased liver size but none of the reproductive effects that had been documented in earlier field studies at this site. Exposure to 1, 3, 10, 30, and 100% bleached kraft mill effluent (BKME) in the lab led to significantly decreased length, but increased weight and liver size in male fathead minnow. Female length was also decreased and liver size was increased at high effluent exposures. Most effluent concentrations (1 to 30%) significantly increased egg production compared with controls. The fathead minnow lifecycle assay mirrored the effects seen in wild fish captured downstream of the BKME discharge. These results will be used to select short-term fish tests for investigating the causes of and solutions to the effects of mill effluents on fish reproduction.
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Barrett, David C. "CattleReview." Livestock 29, no. 4 (2024): 147. http://dx.doi.org/10.12968/live.2024.0009.
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Introduction: In this Cattle Review we consider two papers recently published in the same journal investigating cow-calf contact in dairy production and a paper looking at omphalitis in beef suckler (cow-calf) operations.
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OVCHINNIKOV, G. N., A. S. PANYULAITIS, A. M. MAKAROV, and I. V. VOLKOV. "CALCULATION AND INVESTIGATION OF A VACUUM GRIPPER DEVICE FOR GRIPPING AND HOLDING A FLEXIBLE CONTAINER." IZVESTIA VOLGOGRAD STATE TECHNICAL UNIVERSITY, no. 8(279) (September 2023): 64–67. http://dx.doi.org/10.35211/1990-5297-2023-8-279-64-67.
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The calculation and analytical study of the main power parameters of the vacuum gripper device for capturing, holding and feeding an empty big bag to the position of filling with bulk material has been carried out. Schemes of possible arrangement of vacuum suckers relative to the big bag during its capture are presented.
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Feng, Huashan, Ningli Chai, and Wenhao Dong. "Experimental Investigation on the Morphology and Adhesion Mechanism of Leech Posterior Suckers." PLOS ONE 10, no. 11 (2015): e0140776. http://dx.doi.org/10.1371/journal.pone.0140776.
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More, S. S., G. B. Janvale, S. G. Wagh, K. D. Kadam, and A. A. Akhare. "Deciphering the Genetic Identity and Fidelity of Banana Genotype Musa acuminata through Molecular Fingerprinting." Asian Journal of Agricultural and Horticultural Research 10, no. 4 (2023): 59–66. http://dx.doi.org/10.9734/ajahr/2023/v10i4245.
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Micropropagation for extensive production of elite planting materials is an effective and superior alternative to suckers and conventional means of propagation of Musa spp. The present investigation was carried out to evaluate the genetic identity of different micropropagated banana genotypes Grand Naine, Shrimantee and Basrai. Further micropropagated banana genotypes Grand Naine comparing with mother plant during different stages of subculture using Simple Sequence Repeat (SSR) and Inter Simple Sequence Repeat (ISSR). Moreover, for micropropagation explants (suckers) were inoculated on initiation medium containing MS (Murashige and Skoog) supplemented with 5 mg/l BAP (Benzyl amino purine) and 39 mg/l AdSO4 (Adenine sulphate). The second, third and fourth subcultures were carried out to separate all multiple shoots. Furthermore, for rooting MS media fortified with growth hormones viz., 2 mg/l BAP, 1mg/l IBA (Indole-3-butyric Acid) and 200mg/l activated charcoal were used under present investigation. Findings revealed that 90 % and 75 % plantlets were successfully established during primary hardening in controlled and natural field condition. Further, 26 primers were screened from that 20 primers (ISSR and SSR) showed 146 clear, reproducible and scorable bands ranging from 100-2000 base pairs produced. The banding pattern of these randomly selected plants was monomorphic with mother plant of all selected genotype that confirmed the clonal uniformity.
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Zhongying, Han, and Huang Xiaoguang. "Investigations on corrosion behaviors of super-strength sucker rod FG20 steel in high SO42− environment." Journal of Materials Research and Technology 8, no. 1 (2019): 788–94. http://dx.doi.org/10.1016/j.jmrt.2018.06.008.
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Rashid, M. Z., Amina, A. Bakhsh, M. M. Abbas, and S. Rashid. "EFFECT OF DIFFERENT GROWTH REGULATORS ON ROOT INDUCTION OF LIGHT WEIGHT DATE PALM SUCKERS." Pakistan Journal of Agriculture, Agricultural Engineering and Veterinary Sciences 39, no. 1 (2023): 5–9. http://dx.doi.org/10.47432/2023.39.1.2.
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The present investigation was carried out at Horticultural Research Institute, Ayub Agricultural Research Institute, Faisalabad during 2017-2019 to evaluate the effect of different growth regulators on root induction of Date palm suckers. There were six treatments i.e., T0 (Control), T1 (Indol butyric Acid (IBA) @2000 ppm), T2 (IBA@4000 ppm), T3 (Naphthalene Acetic Acid (NAA) @2000 ppm), T4 (NAA@3000), T5 (IBA@2000 ppm + NAA@2000 ppm). Growth regulators significantly affected the survival percentage, number of leaves, leaf length and number of roots plant-1. Results showed that IBA@4000 ppm gave maximum success percentage (76.3%), highest survival percentage after 90 days (43.8%), maximum number of leaves (4.5), highest leaf length (20.6cm) and highest number of roots plant-1 (24.8). In view of these results, it is concluded that IBA can be used @ 4000 ppm for better root induction of Date palm suckers.
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Adams, Cynthia R., Vicki S. Blazer, Jim Sherry, Robert Scott Cornman, and Luke R. Iwanowicz. "Phylogeographic Genetic Diversity in the White Sucker Hepatitis B Virus across the Great Lakes Region and Alberta, Canada." Viruses 13, no. 2 (2021): 285. http://dx.doi.org/10.3390/v13020285.
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Hepatitis B viruses belong to a family of circular, double-stranded DNA viruses that infect a range of organisms, with host responses that vary from mild infection to chronic infection and cancer. The white sucker hepatitis B virus (WSHBV) was first described in the white sucker (Catostomus commersonii), a freshwater teleost, and belongs to the genus Parahepadnavirus. At present, the host range of WSHBV and its impact on fish health are unknown, and neither genetic diversity nor association with fish health have been studied in any parahepadnavirus. Given the relevance of genomic diversity to disease outcome for the orthohepadnaviruses, we sought to characterize genomic variation in WSHBV and determine how it is structured among watersheds. We identified WSHBV-positive white sucker inhabiting tributaries of Lake Michigan, Lake Superior, Lake Erie (USA), and Lake Athabasca (Canada). Copy number in plasma and in liver tissue was estimated via qPCR. Templates from 27 virus-positive fish were amplified and sequenced using a primer-specific, circular long-range amplification method coupled with amplicon sequencing on the Illumina MiSeq. Phylogenetic analysis of the WSHBV genome identified phylogeographical clustering reminiscent of that observed with human hepatitis B virus genotypes. Notably, most non-synonymous substitutions were found to cluster in the pre-S/spacer overlap region, which is relevant for both viral entry and replication. The observed predominance of p1/s3 mutations in this region is indicative of adaptive change in the polymerase open reading frame (ORF), while, at the same time, the surface ORF is under purifying selection. Although the levels of variation we observed do not meet the criteria used to define sub/genotypes of human and avian hepadnaviruses, we identified geographically associated genome variation in the pre-S and spacer domain sufficient to define five WSHBV haplotypes. This study of WSHBV genetic diversity should facilitate the development of molecular markers for future identification of genotypes and provide evidence in future investigations of possible differential disease outcomes.
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Ramazani F. A, Ramazani F. A., Ngama F. Ngama F, and Okungo A. L. Okungo A. L. "Influence de diamètre des boutures et de la fertilisation sur le pouvoir rejetonnant et la durée de vie de boutures de Macabo (Xanthosoma sagittifolia (L.) Schott.) ex situ dans les conditions de Kisangani." Journal of Research in Agriculture and Animal Science 12, no. 2 (2025): 20–28. https://doi.org/10.35629/9459-12022028.
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In an attempt to contribute to resolving the thorny problem of the low multiplication rate of Xanthosoma sagittifolia (L.) Schott (Malanga or Macabo), a study was carried out on the influence of diameter and fertilization on the suckering power and lifespan of mother bulbs of this species in Kisangani. It consisted of comparing the effects of different fertilizers and cutting diameters on the suckering power and lifespan of Macabo cuttings in a treatment arrangement in lines comprising 15 repetitions of 5 treatments each and a control consisting of Macabo coppiced without application of fertilizer. The observations made during this investigation were mainly focused on the rate of recovery of the cuttings, the number of suckers according to the diameter intervals, the number of suckers formed and weaned by cuttings, and the longevity or lifespan of the bulbs. The results obtained showed that: 1. The rate of recovery of the cuttings was 100% whatever the treatment; 2. The treatment consisting of the combination of pig droppings with mineral manure gave the highest number of suckers in the diameter range of 9.1 to 11.5 cm and for the whole trial. Indeed, the cuttings of diameter included in this range had a suckering power of 8 and 14 higher than the cuttings of diameters included between 6.6 to 9.0 cm and 4.0 to 6.5 cm respectively 3. The average number of suckers per plant decreases during weaning for all treatments because of the progressive exhaustion of the nutrient reserves of the bulbs. There is a positive correlation between the diameter of mother bulbs and the number of suckers. 4. It was noted that more than 50% of the bulbs rotted from the 101st day after planting for T4 (53.3%) and T5 (60%) (combination of organic and mineral fertilizers). For T0, it was at the 128th day (53.3%) and for T1, T2 and T3, it was from the 159th day. It was noted that the treatments that produced more shoots were characterized by a short longevity due to the high number of weaning injuries.
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Cho, Jun Woo, Eunjung Roh, Yong Hwan Lee, and Seong Hwan Kim. "Investigation on the Management Status of Pear and Apple Orchards Where Fire Blight Disease Was Partially Controlled in Korea." Research in Plant Disease 29, no. 3 (2023): 316–20. http://dx.doi.org/10.5423/rpd.2023.29.3.316.
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Recently, the domestic plant disease control policy for fire blight has been implemented partial control in addition to burial control. In this study, an on-site management survey was conducted targeting orchards that implemented partial disease control from 2019 to 2020 in order to find efficient implementation methods for partial disease control. As a result of an investigation into 22 pear and apple orchards in Cheonan and Chungju, 7 orchards were buried. The upper part of the cut infected plants was burned at 16 orchards and covered with plastic vinyl after lime treatment at 6 orchards. The lower stumps of cut infected plants were burned at 7 orchards and covered with plastic vinyl after lime treatment at 15 orchards. There were two orchards where suckers appeared on the stumps even though covers were applied. There was no infection by Erwinia amylovora in the suckers. The conservation condition of lime treatment was good, but warning signs were absent at 6 orchards. Most orchards treated the stumps and surrounding areas with glyphosate-isopropylamine herbicide. The effect of partial control was judged to be safe.
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Honfy, Veronika, Tamás Ábri, Lajos Juhász, János Rásó, Zsolt Keserű, and Károly Rédei. "A simplified method for application of natural regeneration in black locust (Robinia pseudoacacia L.) stands in Hungary." Journal of Forest Science 67, No. 2 (2021): 66–70. http://dx.doi.org/10.17221/147/2020-jfs.
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Black locust (Robinia pseudoacacia L.) is one of the most important forest tree species in Hungary, covering approximately 24% of the forest land and providing 25% of the annual timber supply. One third of these black locust stands are high forests (planted with seedlings) and the remaining stands are coppices. An auxiliary table was developed for planning the black locust natural regeneration in order to determine the sprouting criteria based on stand volume at the final cutting age. Twenty forest subcompartments were selected for investigating the possibility of black locust regeneration by root suckers. The basic yield and stand structure factors were determined using the numerical yield table for black locust stands. The results show that the regeneration of black locust stands from root suckers can be recommended on good and medium quality sites without a decrease in yield or stem quality. Black locust stands of good and medium quality (yield classes I, II, III and IV) may be regenerated from suckers in general until their growing stock attains and if their health is adequate. The simplicity of the practice-oriented auxiliary table based on the black locust yield table may further the development of management and wood utilization of the species.
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Artyukhov, Alexander Vladimirovich, Anatoliy Andreevich Isaev, Alexander Nikolaevich Drozdov, Yana Alekseevna Gorbyleva, and Karina Shamilyevna Nurgalieva. "The Rod String Loads Variation during Short-Term Annular Gas Extraction." Energies 15, no. 14 (2022): 5045. http://dx.doi.org/10.3390/en15145045.
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This paper highlights field studies to determine the nature of variations in the load on the sucker-rod string during short-term gas extraction from the wellbore annulus. The results of step-by-step gas extraction from the annular spaces of the wells of fields developed by PJSC TATNEFT are provided. In the course of investigations, we have obtained both the trends of maximum and minimum loads on the polished rod during annular gas extraction, and the dependence of maximum load increment on the rod string with respect to pump size and pressure variation in the annular space. The analysis of the research data resulted in the elaboration of guidelines for short-term extraction of annular gas from wells operated by the PCP units.
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Anand, M., A. Sankari, and R. Arulmozhiyan. "Evaluation of Commercial Cultivars of Cut Gerbera (Gerbera jamesonii Bolus Ex Hooker F.) under Polyhouse in Shevaroy Condition of Eastern Ghats." Journal of Horticultural Sciences 8, no. 2 (2013): 199–203. http://dx.doi.org/10.24154/jhs.v8i2.301.
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An investigation was carried out to evaluate performance of 36 cultivars of cut gerbera (Gerbera jamesoniiBolus ex Hooker F.) in a polyhouse at Horticultural Research Station, Tamil Nadu Agricultural University, Yercaud, during 2008-2010. Significant differences were observed for all the characters studied. Maximum plant-spread (78.02cm) was observed in cv. Robusta. Higher number of leaves was recorded in cv. White Tibet (41.54). Maximum Leaf length and leaf width was recorded in cvs. Golden Gate and Yanara. Maximum number of suckers produced was recorded in cv. Junkfru (7.60). Maximum stalk length was observed in cv. White Tibet (62.62cm), while flower diameter, cut flower production and vase-life were higher in cv. Rosalin. Correlation and path coefficient analysis showed that plant height, number of leaves per plant and number of suckers per plant were the important components of cut-flower yield in gerbera. It may be concluded that cultivars Rosalin, White Tibet, Junkfru and Golden Gate were found to be the best for floral quality and yield, and are recommended for cut-flower production under Shevaroy condition of Eastern Ghats.
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Doorley, S., M. J. Drennan, P. J. Caffrey, D. Pullar, and J. Stark. "Investigating the accuracy and usefulness of ultrasonic scanning and muscle scoring in predicting carcass conformation, fat and composition in cattle." Proceedings of the British Society of Animal Science 2001 (2001): 76. http://dx.doi.org/10.1017/s1752756200004580.
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Increasingly the market demand is for carcasses of better conformation which is reflected in carcass prices. Therefore the breeding policy for suckler herds must reflect market requirements. This study examined the usefulness of ultrasonic scanning and muscle scoring in predicting carcass conformation, fatness and meat yield.
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R.S., Madle, Pathan D.M., and Bhure Dhanraj Balbhim. "Morphotaxonomic Observation of a New Species of the Genus Marsipometra from Carcharhinus laticaudus." INTERNATIONAL JOURNAL OF BIOLOGICAL AND ENVIRONMENTAL INVESTIGATIONS 02, no. 01 (2022): 19–21. http://dx.doi.org/10.33745/ijbei.2022.v02i01.002.
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Present investigation deals with a new cestode Marsipometra jadhavae Sp.Nov. from Carcharhinus laticaudus at Bhatye, Kalambadevi,Harne, Mirya, Ratnagiri, West Coast of Maharashtra, India. The parasites collected in this study possessed scolex pyramidal, arrow shaped, apical disk narrower than base of scolex, suckers oval to rounded in shape, arranged in two groups, neck absent, Mature proglottids longer than broad, Testes oval, large, 4 in number, cirrus pouch oval, elongated, the vas deference short, genital pore marginal, vagina posterior to the cirrus pouch, ovary bilobed and granular vitellaria, arranged in two rows.
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Mazurek, Mickael, Daniel J. Prendiville, Mark A. Crowe, Isabelle Veissier, and Bernadette Earley. "An on-farm investigation of beef suckler herds using an animal welfare index (AWI)." BMC Veterinary Research 6, no. 1 (2010): 55. http://dx.doi.org/10.1186/1746-6148-6-55.
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Cutler, Keith L. "An investigation into the cause of poor breeding performance in a beef suckler herd." Livestock 17, no. 2 (2012): 27–30. http://dx.doi.org/10.1111/j.2044-3870.2011.00092.x.
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